Cheryl Cole has jokingly suggested that she had not yet forgiven Simon Cowell for her sacking from The X Factor USA – but added she was relieved to have left the show.

The former judge took the opportunity to have a dig at the mogul when she appeared on the Graham Norton show over the weekend, and was asked whether they had kissed and made up.

“I wouldn’t say I’ve kissed Simon – I tell you one thing he can kiss,” she joked, before adding, “No, we’ve made up, we’re fine.”

But she added, “There was no anger, just relief. I thought let’s make some music.”

Cheryl – who appeared on the show alongside Katy Perry – also revealed how she got her own back on Simon during her visit to British troops in Afghanistan.

“They had this whole section with explosive devices and they were blowing them up to see how they worked,” she said. “When I got there, someone had dressed one of them up to look like Simon and it was the best thing – I got to press the button, the detonator! It just went “boom”!

‘And then when I came back, I had messages from Simon saying, “So now that you’ve blown me up in Afghanistan, is there any chance that we can just have this conversation? That’s when I first spoke to him.”